Hi Dear Authorized,
I am trying to validate my software for HyperFlash operations for my custom board. Firstly, I realized tests with EVK. During test on EVK with HyperFlash I achieve successful read/write operations except one case.
I am trying to write 0x00, 0x98 to the memory address. But when I check it in memory it is differentiate. As you can see below example (default hyperflash sdk example):
- My first question is about what is the role of flexspi_nor_hyperbus_write_cfi function ?
- My second question is about my Custom Board. My HyperFlash running at 100MHz and I am using same sdk example which I use on EVK. The only difference between them is running frequency. Therefore I set up frequency like below. But the things that makes me suspicious is that hyperflash_config struct is not used anywhere in the code. How can I sure about the correct frequency is setted up?
Thanks and Regards.
Hi @Lukas_Frank ,
Hope you are doing well!
About the 0x00 0x98, it is CFI Entry command and Exit command. These commands are specified by the Flash manufacturer, and you can consult this source. https://www.cypress.com/file/213346/download
In additional, hyperflash_config struct is only Flash Configuration Block. This demo should run in the RAM, if you want to modify the clock frequency, you should consult the clock tree and assign the frequency in the app code.
Best regards,
Gavin
Hi Dear @Gavin_Jia ,
Thank you for the first reply. I understand why it is not writing to the memory 0x00 and 0x98. But I still don't why it is writing to memory 0x06000600 to the HyperFlash address 0x60000AAA. Could you please explain shortly?
Additionally, did you express Config Tools > Clocks Diagram > FlexSPI clock ?
Thanks and Regards.
